CA489304A - Dispositifs de fermeture de wagonnets de mines - Google Patents

Dispositifs de fermeture de wagonnets de mines

Info

Publication number: CA489304A
Authority: CA; Canada
Prior art keywords: mine car; sealing devices; car sealing; mine; devices
Prior art date: 1952-12-30
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

Other languages

Inventor

E. Jones Robert

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Sanford Investment Co

Original Assignee

Sanford Investment Co

Publication date

1952-12-30

1952-12-30 Application granted granted Critical

1952-12-30 Publication of CA489304A publication Critical patent/CA489304A/fr

Status Expired legal-status Critical Current

Links

CA489304D Dispositifs de fermeture de wagonnets de mines Expired CA489304A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA489304T

Publications (1)

Publication Number	Publication Date
CA489304A true CA489304A (fr)	1952-12-30

Family

ID=35629030

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA489304D Expired CA489304A (fr)			Dispositifs de fermeture de wagonnets de mines

Country Status (1)

Country	Link
CA (1)	CA489304A (fr)

0
- CA CA489304D patent/CA489304A/fr not_active Expired

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